#include<stdio.h>
int main()
{

 printf("hello world!\n");
 printf("hello world!\n");
 printf("hello world!\n");
 printf("hello world!\n");
 printf("hello world!\n");
 printf("hello world!\n");
 printf("hello world!\n");
 printf("hello world!\n");
 printf("hello world!\n");
 printf("hello world!\n");
 printf("hello world!\n");
 printf("hello world!\n");
    return 0;
}
